Sliver colier



Nov. 6, 1962 w. NAEGELI SLIVER COILER Filed Feb. 24, 1959 w r G fi NW Wm M NAN i M United States Patent 3,061,893 SLIVER COILER Werner Naegeli, Winterthur, Switzerland, assignor to Job. Jacob Rieter & Co., Winterthur, Switzerland, a

corporation of Switzerland Filed Feb. 24, 1959, Ser. No. 794,964 Claims priority, application Swwitzerland Feb. 28, 1958 3 Claims. (Cl. 19-159) The present invention relates to a coiler as used in sliver depositing apparatus of preparatory spinning machinery.

Conventional sliver coilers have guide channels for the sliver in which the roving is considerably bent or sharply diverted before it is deposited in containers placed below the coiler. This causes considerably faulty drafting.

The present invention overcomes the deficiencies of the conventional coilers by providing a channel of circular cross section extending from the sliver inlet at the center of the upper portion of the coiler to the sliver outlet at the periphery of the lower portion of the coiler, the channel diameter becoming gradually smaller towards the outlet of the channel and the channel axis forming a helical line. The latter is wound along an imaginary cylinder whose diameter corresponds to the sliver depositing radius of the coiler.

The novel features which are considered characteristic of the invention are set forth with particularity in the appended claims. The invention itself, however, and additional objects and advantages thereof will best be understood from the following description of an embodiment thereof when read in connection with the accompanying drawing the one FIGURE of which is a perspective illustration of -a sliver coiler according to the invention.

Referring more particularly to the drawing, numeral 1 designates a pair of delivery rollers directing sliver, not shown, towards the center 2 of the inlet of the coiler 4 which inlet is in a flange 5 placed normal to the rotation axis of the coiler. A tubular guide conduit 6 for the sliver extends downward from the flange 5 toward ice the peripheral portion of a dish shaped lower part 7 of the coiler. A rib 8 is provided to make the structure more rigid. The rim of the bottom part 7 of the coiler is cylindrical and externally provided with teeth 10 which engage a Worm, not shown, in the conventional manner. The cross section of the guide conduit 6 is circular, its diameter being gradually reduced in the downward direction of the conduit as indicated by dotted circles 12 and 13. The center line 11 of the conduit is helical, the diameter of the cylinder on which the helix is wound corresponding to the radius R at the end of which the sliver is deposited into a can indicated by dash-dot lines in the drawing.

I claim:

1. A coiler for helically depositing sliver as used in preparatory spinning machinery comprising coiling means defining a guide channel for the sliver, means for mounting said coiling means to rotate about an axis, said guide channel including an inlet substantially disposed at the axis of said coiling means and an outlet disposed at a predetermined radial distance from said axis, said guide channel from said inlet to said outlet being curved to have the center line thereof conform to a helix wound around an imaginary cylinder.

2. A coiler as defined in claim 1 wherein the diameter of the imaginary cylinder around which the helical center line of the guide channel is wound corresponds substantially to the distance between the outlet of said channel and the rotation axis of the coiler.

3. A coiler as defined in claim 1 in which the cross section of said guide channel is circular.

References Cited in the file of this patent 

